General proof of (maximum) entropy principle in Lovelock gravity

Abstract

We consider a static self-gravitating perfect fluid system in Lovelock gravity theory. For a spacial region on the hypersurface orthogonal to static Killing vector, by the Tolman's law of temperature, the assumption of a fixed total particle number inside the spacial region, and all of the variations (of relevant fields) in which the induced metric and its first derivatives are fixed on the boundary of the spacial region, then with the help of the gravitational equations of the theory, we can prove a theorem says that the total entropy of the fluid in this region takes an extremum value. A converse theorem can also be obtained following the reverse process of our proof. We also propose the definition of isolation quasi-locally for the system and explain the physical meaning of the boundary conditions in the proof of the theorems.

arXiv commentrevtex4, 14 pages, no figure

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Cited by in corpus (6)

• Lovelock black holes with non-constant curvature horizon
• Proof of entropy principle in Einstein-Maxwell theory
• Thermodynamical stability for perfect fluid
• Consistency between dynamical and thermodynamical stabilities for perfect fluid in $f(R)$ theories
• Consistency between dynamical and thermodynamical stabilities for charged self-gravitating perfect fluid
• Universality of entropy principle for a general diffeomorphism-covariant purely gravitational theory